Firestop acrylic sealant is a one-component intumescent plastoelastic joint sealant based on acrylic dispersions.

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FireStop Acrylic Sealant


Firestop/ Fire Barrier/ intumescent Acrylic Sealant 

Selsil Fire resistant acrylic sealant is one component, acrylic emulsion based and specially formulated for being barrier against fire.


▪ Water based, contains no asbestos or fibres
▪ Easy application
▪ Short surface curing
▪ Paintable
▪ Good adhesion to concrete and masonry substrates
▪ Flexible

Technical Information

Chemical Base:           Acrylic based intumescent compound containing organic fillers
Color:                              White
Specific gravity:          1,56±0,03 g/cm³
(DIN 53479)
Tack free time:             15-25 min.
(25ºC and 50% R.H)
Cure Rate:                     2 mm/24 hour
(25ºC and 50% R.H)
Fire Rate Test:            See Report No: 18-14847-115-1

How to Use Firestop sealant 

Application Temperature: +5 °C to +35 °C
The application surface must be solid, clean, dry and free of dust, oil and Grease.
Suitable for below applications;
• Precast panel joints
• Control joints in masonry blockwork
• Sealing around metal ducting/pipework etc.

Uses of Acrylic FR Sealants

  • Interior fire-resistant applications
  • Fire-resistant sealing compound for cracks in concrete and plaster
  • Fire-resistant connection joints in the building industry
  • Fire-resistant joints with movements up to 10%.


290 ml x 25 per box

Shelf Life

Store the product in a cool and dry place.
The shelf life is 12 months at temperatures between +5°C and +25°C


Keep out of reach of children. Avoid contact with skin and eyes. Use gloves before application. Keep out of freezing, direct sunlight and temperatures above 40°C

Health and Safety

For more information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing, physical, ecological, and toxicological and other safety related data.

What is a Firestop sealant

There is one important element in firestop materials that makes them different from so many other sealants is the way they behave in a fire.  Of course the “secret sauce” that goes into the product that makes them more expensive than other sealants also.  The key element in many, but not all, firestop products is their capacity to expand when the product is exposed to the heat seen in a fire scenario.  The industry lingo is intumescent.  When looking at the sealants used in firestop they are either used in joint applications so they need to allow for movement, or they are used in through penetrations in which case many applications will require an intumescent product

Types of Fire Sealants

  1. Acrylic Firestop Sealants: Based on acrylic polymers, low in cost, excellent sealing capability. 
  2. B1 FR Silicone sealants: Silicone sealant, excellent sealaing and good bonding capability. 
  3. B1FR PU Foam Sealants: Expandable foam spray sealants with FR approval. Can fill large gaps, excellent bonding & sealing capbilities.



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